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End User License Agreement
by David A. Westcott, David D. Coleman
CWNA Certified Wireless Network Administrator Study Guide, 5th Edition
Acknowledgments
About the Authors
Table of Exercises
Foreword
Introduction
CWNA Exam (CWNA-107) Objectives
CWNA: Certified Wireless Network Administrator Exam (CWNA-107) Objectives
Assessment Test
Answers to the Assessment Test
Chapter 1 Overview of Wireless Standards, Organizations, and Fundamentals
History of Wireless Local Area Networks
Standards Organizations
Core, Distribution, and Access
Communications Fundamentals
Summary
Exam Essentials
Review Questions
Chapter 2 IEEE 802.11 Standard and Amendments
Original IEEE 802.11 Standard
IEEE 802.11-2016 Ratified Amendments
Post 802.11-2016 Ratified Amendments
IEEE 802.11 Draft Amendments
Defunct Amendments
IEEE Task Group m
Summary
Exam Essentials
Review Questions
Chapter 3 Radio Frequency Fundamentals
What Is a Radio Frequency Signal?
Radio Frequency Characteristics
Radio Frequency Behaviors
Summary
Exam Essentials
Review Questions
Chapter 4 Radio Frequency Components, Measurements, and Mathematics
RF Components
Units of Power and Comparison
RF Mathematics
Summary
Exam Essentials
Review Questions
Chapter 5 Radio Frequency Signal and Antenna Concepts
Azimuth and Elevation Charts (Antenna Radiation Envelopes)
Interpreting Polar Charts
Beamwidth
Antenna Types
Visual Line of Sight
RF Line of Sight
Fresnel Zone
Earth Bulge
Antenna Polarization
Antenna Diversity
Multiple-Input, Multiple-Output
Antenna Connection and Installation
Antenna Accessories
Regulatory Compliance
Summary
Exam Essentials
Review Questions
Chapter 6 Wireless Networks and Spread Spectrum Technologies
Narrowband and Spread Spectrum
Frequency-Hopping Spread Spectrum
Direct-Sequence Spread Spectrum
Orthogonal Frequency-Division Multiplexing
Industrial, Scientific, and Medical Bands
Unlicensed National Information Infrastructure Bands
3.6 GHz Band
4.9 GHz Band
Future Wi-Fi Frequencies
2.4 GHz Channels
5 GHz Channels
Adjacent, Nonadjacent, and Overlapping Channels
Throughput vs. Bandwidth
Communication Resilience
Summary
Exam Essentials
Review Questions
Chapter 7 Wireless LAN Topologies
Wireless Networking Topologies
802.11 Stations
802.11 Service Sets
802.11 Configuration Modes
Summary
Exam Essentials
Review Questions
Chapter 8 802.11 Medium Access
CSMA/CA vs. CSMA/CD
Collision Detection
Distributed Coordination Function
Point Coordination Function
Hybrid Coordination Function
Wi-Fi Multimedia
Airtime Fairness
Summary
Exam Essentials
Review Questions
Chapter 9 802.11 MAC
Packets, Frames, and Bits
Data-Link Layer
Physical Layer
802.11 and 802.3 Interoperability
802.11 MAC Header
802.11 Frame Body
802.11 Trailer
802.11 State Machine
Management Frames
Control Frames
Data Frames
Power Management
Summary
Exam Essentials
Review Questions
Chapter 10 MIMO Technology: HT and VHT
MIMO
Multi-User MIMO
Channels
Guard Interval
256-QAM Modulation
802.11n/ac PPDUs
802.11n/ac MAC
HT/VHT Protection Mechanisms
Wi-Fi Alliance Certification
Summary
Exam Essentials
Review Questions
Chapter 11 WLAN Architecture
WLAN Client Devices
Management, Control, and Data Planes
WLAN Architecture
Specialty WLAN Infrastructure
Cloud Networking
Infrastructure Management
Application Programming Interface
Summary
Exam Essentials
Review Questions
Chapter 12 Power over Ethernet (PoE)
History of PoE
An Overview of PoE Devices
Planning and Deploying PoE
802.11ac and PoE
Summary
Exam Essentials
Review Questions
Chapter 13 WLAN Design Concepts
WLAN Coverage Design
Roaming Design
Channel Design
Capacity Design
Voice vs. Data
Dual 5 GHz and Software-Defined Radios
Physical Environment
Antennas
Outdoor Design
Summary
Exam Essentials
Review Questions
Chapter 14 Site Survey and Validation
WLAN Site Survey and Design Interview
Vertical Market Considerations
Legacy AP-on-a-Stick Survey
Hybrid Survey
Validation Survey
Site Survey Tools
Documents and Reports
Summary
Exam Essentials
Review Questions
Chapter 15 WLAN Troubleshooting
Five Tenets of WLAN Troubleshooting
Layer 1 Troubleshooting
Layer 2 Troubleshooting
Security Troubleshooting
Roaming Troubleshooting
Channel Utilization
Layers 3–7 Troubleshooting
WLAN Troubleshooting Tools
Summary
Exam Essentials
Review Questions
Chapter 16 Wireless Attacks, Intrusion Monitoring, and Policy
Wireless Attacks
Intrusion Monitoring
Wireless Security Policies
Summary
Exam Essentials
Review Questions
Chapter 17 802.11 Network Security Architecture
802.11 Security Basics
Legacy 802.11 Security
Robust Security
Traffic Segmentation
WPA3
VPN Wireless Security
Summary
Exam Essentials
Review Questions
Chapter 18 Bring Your Own Device (BYOD) and Guest Access
Mobile Device Management
Self-Service Device Onboarding for Employees
Guest WLAN Access
Hotspot 2.0 and Passpoint
Network Access Control
Summary
Exam Essentials
Review Questions
Chapter 19 802.11ax: High Efficiency (HE)
HE Overview
Multi-User
OFDMA
MU-MIMO
BSS Color
Target Wake Time
Additional 802.11ax PHY and MAC Capabilities
802.11ax Design Considerations
Summary
Review Questions
Chapter 20 WLAN Deployment and Vertical Markets
Deployment Considerations for Commonly Supported WLAN Applications and Devices
Corporate Data Access and End-User Mobility
Network Extension to Remote Areas
Bridging: Building-to-Building Connectivity
Wireless ISP: Last-Mile Data Delivery
Small Office/Home Office
Mobile Office Networking
Branch Offices
Educational/Classroom Use
Industrial: Warehousing and Manufacturing
Retail
Healthcare
Municipal Networks
Hotspots: Public Network Access
Stadium Networks
Transportation Networks
Law Enforcement Networks
First-Responder Networks
Managed Service Providers
Fixed Mobile Convergence
WLAN and Health
Internet of Things
WLAN Vendors
Summary
Exam Essentials
Review Questions
Appendix A Answers to Review Questions
Chapter 1: Overview of Wireless Standards, Organizations, and Fundamentals
Chapter 2: IEEE 802.11 Standard and Amendments
Chapter 3: Radio Frequency Fundamentals
Chapter 4: Radio Frequency Components, Measurements, and Mathematics
Chapter 5: Radio Frequency Signal and Antenna Concepts
Chapter 6: Wireless Networks and Spread Spectrum Technologies
Chapter 7: Wireless LAN Topologies
Chapter 8: 802.11 Medium Access
Chapter 9: 802.11 MAC
Chapter 10: MIMO Technology: HT and VHT
Chapter 11: WLAN Architecture
Chapter 12: Power over Ethernet (PoE)
Chapter 13: WLAN Design Concepts
Chapter 14: Site Survey and Validation
Chapter 15: WLAN Troubleshooting
Chapter 16: Wireless Attacks, Intrusion Monitoring, and Policy
Chapter 17: 802.11 Network Security Architecture
Chapter 18: Bring Your Own Device (BYOD) and Guest Access
Chapter 19: 802.11ax: High Efficiency (HE)
Chapter 20: WLAN Deployment and Vertical Markets
Appendix B Abbreviations and Acronyms
Certifications
Organizations and Regulations
Measurements
Technical Terms
Index
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